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High severity7.5NVD Advisory· Published Oct 29, 2019· Updated Jun 17, 2026

CVE-2019-3979

CVE-2019-3979

Description

RouterOS versions 6.45.6 Stable, 6.44.5 Long-term, and below are vulnerable to a DNS unrelated data attack. The router adds all A records to its DNS cache even when the records are unrelated to the domain that was queried. Therefore, a remote attacker controlled DNS server can poison the router's DNS cache via malicious responses with additional and untrue records.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

4
  • Mikrotik/Routerosllm-fuzzy3 versions
    <=6.45.6 Stable, <=6.44.5 Long-term+ 2 more
    • (no CPE)range: <=6.45.6 Stable, <=6.44.5 Long-term
    • cpe:2.3:o:mikrotik:routeros:*:*:*:*:-:*:*:*range: <=6.45.6
    • cpe:2.3:o:mikrotik:routeros:*:*:*:*:ltr:*:*:*range: <=6.44.5
  • MikroTik/RouterOSdescription

Patches

Vulnerability mechanics

References

1

News mentions

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